Question

An object has the acceleration-time graph as shown. When is the object at rest?

• A. At $t=0\text{s}$
• B. At $t=4\text{s}$
• C. At $t=4\text{s}$ and $t=8\text{s}$
• D. Impossible to determine from the given information

Answer 1

The correct option is D Impossible to determine from the given information

Since, the initial velocity is not given, it is not possible to find out when the particle is at rest. Hence, the correct answer is option (d)